Here are a few pics from my Mandalorian helmet build. I started with floor mat foam for the base, filled seams with Kwik Seal, and then sealed with Epsilon Epoxy from Smooth on before spraying with grey primer. I’m struggling with getting it smooth and could use some advice. At this point all I can figure is to sand it, reapply epoxy and repeat until it’s as smooth as I can get it. Is this something that just takes time and patience (aka practice) or is there something else I should be doing?